ANSI WDMA-IS-1A-2004 pdf download Architectural Wood Flush Doors
The Model Codes have established a fire door rating system for doors that protect openings in fire resistant rated wall constructions. The Fire Door Ratings Table provides the relationship between the fire door rating and the wall rating.
In 1997, the International Council of Building Officials (ICBO) approved a change to the Uniform Building Code (UBC) that requires fire doors to be tested under positive pressure instead of neutral pressure. Many states and local jurisdictions across the U.S. have adopted the International Building Code (IBC) which also contains the requirement for positive pressure.
It is very important that architects, contractors and distributors are aware of the requirements in their area so the appropriate type of door is supplied (neutral or positive pressure). Door manufacturers are not responsible for interpretations of local codes.
All fire doors must meet the requirements of recognized fire door tests and bear certifying labels of an independent testing agency approved by the building official.
Installation is required to be in accordance with the National Fire Protection Association’s Publication NFPA 80, “Standard for Fire Doors and Fire Windows”. Machined fire doors shall be provided with detailed installation instructions when doors bear a label indicating compliance to UBC 7-2-1997 or UL 10C.
Positive pressure openings can be accomplished in two basic ways: CATEGORY “A” DOORS –NO ADDITIONAL EDGE-SEALING SYSTEM REQUIRED -This category includes doors evaluated without an edge- sealing system between the door and frame. It also includes doors evaluated with a sealing system incorporated (concealed or visible) into the edge of the door by the licensed manufacturer or machining distributor. Meeting edges of pairs may require an astragal or edge sealing system. Please refer to individual door listing.
CATEGORY “B”DOORS – ADDITIONAL EDGE-SEALING SYSTEM REQUIRED – This category includes doors evaluated with an edge-sealing sys- tem applied to the labeled frame or door. The application of the edge-sealing system does not require any field machining of the frame or door. Please refer to Category “G”, “Edge-Sealing Systems” for individual manufacturer’s listing.